WX-1000 Digital Weather Receiver Computer Automation Technology, Inc 4631 N.W. 31st Avenue, Suite 142 Fort Lauderdale, Florida 33309 Phone: (954) 978-6171 Fax: (561) 488-2894 Internet: http://www.catauto.
Table of Contents Chapter Page 1. Introduction and Specifications 1-1 2. Interfacing to Repeater 2-1 3. Configuration Programming 3-1 4. Drawings 4-1 5. Schematics 5-1 6. Parts List 6-1 REVISED 04/02/02 (V2.
Chapter 1 - Introduction and Specifications WX-1000 Weather Receiver The WX-1000 is a highly sensitive, quality receiver, with good front-end protection designed to function in the high RF environment typical of many repeater sites. A digital decoder responds to Specific Area Message Encoded (SAME) alerts transmitted by the NOAA weather station located in your geographic area. Select your county code and the type of alert. Select warnings and or watches.
Alert Message Timer Selection At the conclusion of an alert message the weather station send a digital termination packet. The WX-1000 decodes this packet and turns the transmitter off. If the weather station fails to send the termination packet the alert message timer will take over. Select this time with the WX-1000 configuration program. Specifications Available NOAA Channels: 162.400 MHz, 162.425 MHz, 162.450 MHz, 162.475 MHz 162.500 MHz, 162.525 MHz, 162.550 MHz Sensitivity Receive: 0.
Chapter 2 - Interfacing to Repeater CAT-1000 Interface Connect the WX-1000 to the CAT-1000 and the repeater as shown in Figure 2-1. PTT and transmit audio from the CAT-1000 are connected to the repeater's transmitter through the normally closed contacts of the double pole double throw relay located in the WX1000. Set the power switch to on, the WX-1000 will announce the firmware version.
The weather noon. Check test message memory file scheduler to noon. bureau usually tests the system every Wednesday between 11 AM and 12 with your local weather service office for the exact day and time. The will be transmitted on your repeater. However you may not want to load #4 when its just a test. To prevent the memory file load use the disable hardware input #1 at 11AM and enable hardware input #1 at 12 Program scheduler position #1 at 11:00 AM on Wednesday to turn off Zone 7 Channel #1.
CAT-300DX Interface Connect the WX-1000 to the CAT-300DX and the repeater as shown in Figure 2-3.
CAT-200 Interface Connect the WX-1000 to the CAT-200 and the repeater as shown in Figure 2-5.
12VDC Interface J2 Connect a 12VDC power supply to the WX-1000 receiver through the 2.5mm power jack J2. The center pin is positive. In stand-by mode the WX-1000 requires approximately 100 ma. Repeater Interface PTT Ground [J3-1] Connect this pin to the transmitter chassis ground. This will insure that during an alert the PTT line will be returned to transmitter chassis ground. Repeater Interface PTT Input [J3-2] Connect this pin to the controller PTT output.
Repeater Interface Weather Output #3 [J3-13] From the “WX-1000 Hardware Inputs and Outputs” window, select the Output #3 tab. From the list of “Rising Edge” events dot the circle of the event you wish to cause output #3 to rise to +5 volts. From the trailing edge list dot the circle of the event you wish to cause output #3 to drop back to 0 volts.
Play Test Packets You can generate test packets with your computer’s sound card to test the WX-1000. NOTE: Insure that during the test sequence the sound card is not configured to apply “special effects” to the sound files. Connect the output of the sound card to the modulation input of a RF signal generator. Set the frequency to 162.XXX MHz at 3KHz deviation. If a signal generator is not available connect a cable from the output of the sound card to WX1000 at TP2.
Chapter 3 - Configuration Programming The WX-1000 Configuration program requires a Windows 95, 98, 2000, NT or Me operating system. Install the program. Press START, PROGRAMS, and WX1000 Weather Receiver to display the [WX-1000 DIGITAL WEATHER RECEIVER] window. Figure 3-1 WX-1000 Setup Click the [Program Setup] button to display the [WX-1000 SETUP] window. Select your computer’s serial port or click on the “Serial Port Test” button. Your computer will determine which port is connected to the WX-1000.
Federal Information Processing Codes From the WX-1000 Digital Weather Receiver window click the [U.S. FLAG] button to display the [WX-1000 FIPS Codes] window. Click the [SELECT STATE / TRANSMITTER CITY] button to display the [WX-1000 STATE / TRANSMITTER LOCATION] window. Figure 3-3 WX-1000 State / Transmitter Entry Select the state and frequency from the drop down boxes. Select the transmitter location and Click [OK].
The WX-1000 FIPS Codes window will display the counties serviced by the selected transmitter. Select the desired county or counties by checking the boxes along the left column. Up to 24 counties can be selected. When the selections are complete, click [OK] to return to the WX-1000 FIPS Code window. Figure 3-5 FIPS Code Editor The WX-1000 editor program includes an all states database derived from the database of the NOAA weather service at www.noaa.org.
WX-1000 Event Codes Click the [STORM CLOUD] button to display the [WX-1000 EVENT CODES] Window. Select up to twenty-four events by checking the box next to each event. When the selections are complete check OK. WX-1000 Options Settings Figure 3-7 Click the [TOOLS] button to display the [WX-1000 OPTIONS SELECT] Window. Options include Received Alert Options, Front Panel Switch Options, Override Options and Voice Interval Options. Select the desired options and click [OK].
Received Alert Options These boxes should be checked to activate the front panel speaker, transmitter and front panel LED. Front Panel Switch Options These boxes should be checked for the front panel MONITOR switch to activate the speaker, transmitter and line audio. Override Options If the accept all FIP and Event Codes boxes are checked, the WX-1000 will respond to all alerts issued by the weather station. Operation is similar to a receiver with 1050Hz decoder only.
Pre Voice Delay This timer selects the delay between activation of the control relay and when the voice synthesizer begins to speak. Voice Interval Timer Option Imbedded in the alert information packet is the time the warning or watch is in effect. The time is sent in fifteen-minute increments for the first hour and thirty minute increments for the remaining time of the alert.
Activate Receiver On Warnings Alerts Only Input [GROUND] When this input is grounded, the WX-1000 will only respond to programmed warnings. Cancel Any Active Alert (RESET) Input [PULSE TO GROUND] When this input is momentary grounded, the WX-1000 will reset, canceling the alert. Skip Voice Announcement Input [GROUND] After the alert message has been transmitted the WX-1000 will periodically key the repeater transmitter and send a voice synthesizer describing the nature of the alert.
Call Letter Identification Use the WX-1000 voice synthesizer to identify the transmitter at the end of an alert and during the periodic voice weather announcements. Enter your station identification in the Call Letter Box. Valid characters are A-Z and 0-9. Up to fifteen (15) characters can be entered. Additional check boxes are provided to add the words “This is”, “Transmitter” and “Repeater” to the identification announcement.
Test County FIP Codes After a data transfer, set the front panel MONITOR switch to on and momentary flip the RESET switch. The voice synthesizer will read out the county FIP codes stored in memory. Example: The voice will say: “WX1000 TEST FIP CODES ARE 013067 013089 013121.” The voice synthesizer will also announce the station ID if enabled. Reset WX-1000 Memory Turn off the receiver, set the front panel MONITOR switch to on, hold the reset switch up while turning the power on.
Weather Data Packet Figure 3-15 describes a typical weather data packet as it is received from the National Weather Service.
Click the “RAW DATA” button to display the last alert received by the WX-1000.
Chapter 4 - Drawings Figure 4-1 23
Chapter 5 - Schematics WX-1000 Schematic Sheet 1 of 3 WX-1000 Schematic Sheet 2 of 3 WX-1000 Schematic Sheet 3 of 3 24
Chapter 6 - Part List 1 1 1 1 1 1 11 Bead Inductor Cap Diode Capacitor Capacitor Capacitor Capacitor Capacitor P9810 6.8pf .0015uf .0047uf .0082uf .027uf Film Cap .1uf 50V 1 7 2 6 4 3 1 14 Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor 4.7uf 16V 10uf 16V 470uf 25V .001uf .01uf .015uf .033uf .
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